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M74HCT245B1R 데이터 시트보기 (PDF) - STMicroelectronics

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M74HCT245B1R HCT640 INVERTING, HCT643 INVERTING/NON INVERTING OCTAL BUS TRANSCEIVER (3-STATE): HCT245 NON INVERTING STMICROELECTRONICS
STMicroelectronics STMICROELECTRONICS
M74HCT245B1R Datasheet PDF : 11 Pages
1 2 3 4 5 6 7 8 9 10
M54/M74HCT245/640/643
AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, Input tr = tf = 6 ns)
Symbol
Parameter
Test Conditions
VCC CL
(V) (pF)
TA = 25 oC
54HC and 74HC
Value
-40 to 85 oC -55 to 125 oC Unit
74HC
54HC
Min. Typ. Max. Min. Max. Min. Max.
tTLH Output Transition 4.5 50
tTHL Time
tPLH Propagation
tPHL Delay Time
4.5 50
4.5 150
7
12
15
18
ns
13 22
28
33
ns
18 30
38
45
ns
tPZL Output Enable
4.5 50 RL = 1K
19 30
38
45
ns
tPZH Time
4.5 150 RL = 1K
24 38
48
57
ns
tPLZ Output Disable
tPHZ Time
4.5 50 RL = 1K
17 30
38
45
ns
CIN
CI/OUT
Input Capacitance
Output
Capacitance
DIR, G
An, Bn
5
10
10
10 pF
13
pF
CPD (*) Power Dissipation
HCT245
41
Capacitance
HCT640/643
39
pF
(*) CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without load.
(Refer to Test Circuit). Average operting current can be obtained by the following equation. ICC(opr) = CPD VCC fIN + ICC/8 (per circuit)
SWITCHING CHARACTERISTICS TEST WAVEFORM
5/11
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